What is the tree of life?
The tree of life shows how all life on earth is related. Each leaf represents a different species. The branches show how these many species evolved from common ancestors over billions of years. In our interactive tree of life you can explore the relationships between 2,235,076 species and wonder at 105,372 images on a single zoomable page.
- 2,235,076 species
- 105,372 images
Biodiversity and Conservation...
We want to help everyone appreciate biodiversity and the need to conserve it.
Red leaves on our tree of life show species known to be under threat of extinction.
Green leaves are either okay for now but might be nearly threatened.
Most leaves are grey meaning that it's not known how threatened they are.
What they say...
The best tool I’ve seen for exploring the tree of life on this planet.
OneZoom is a brilliant, interactive tool for understanding the scope and scale of the tree of life, including highlights for conservation priorities.
I wanted to congratulate the OneZoom team on the amazing interface and reference resource that is OneZoom. Amazing job!
…simply the most useful tool for understanding phylogenetic and evolutionary relationships.
OneZoom is one of the most fascinating visualization projects I've seen in years!
Wonderful idea and resource!
OneZoom really helps get my mind around the complexities of the tree of life.
Genius visualisation project mapping the entire tree of life into a single explorable diagram.
OneZoom is probably my favorite website of all time.
Your tree is the best thing to ever happen to evolutionary education. Keep up the amazing work.
Become a sponsor...
OneZoom is a registered non-profit in the UK, all our products are available for free. 785 people like you have helped us by making donations. Their names have appeared as sponsors on 1403 leaves of our tree of life leaves of our tree of life.
Only one name per leaf so get your favourite while you can, for yourself or as a gift.
What we've been up to...
6 February 2022OneZoom version 3.6 (nickname: musical_furry_lobster) has been officially released. We now show species occurrence (distribution) maps in the popup tabs when clicking on a species, and have instructions for how to run a bespoke OneZoom version with your own images instead of, or as well as, our own pictures. There are also a few minor changes to the tree, with a more recent arrangement of the first few (archaeal) branches, and the addition of the dodo!
14 December 2021
Announcing the publication of ‘Dynamic visualisation of million-tip trees: The OneZoom project’ out today in Methods in Ecology and Evolution. This publication accompanies OneZoom version 3.5 'Chocolate chip starfish' and explains a lot of the science behind the OneZoom project.
15 October 2021
OneZoom version 3.5 'Chocolate chip starfish' released with new and improved colour schemes and styles as well as substantial improvements to the content and interpretation pages throughout the site.
16 October 2020
OneZoom version 3.4.1 released with new public APIs providing information on the popularity of species and representative images for groups of species as well as other tools intentended for use by researchers and other science communication projects.
15 October 2020
A new publication, Dynamic visualisation of million-tip trees: the OneZoom project, is now live on BioRxiv describing a lot of the research that's gone on behind the scenes over the last five years to make OneZoom a reality.